PIC16F873-04I/SO Microchip Technology, PIC16F873-04I/SO Datasheet - Page 208

• Manufacturer Part Number: PIC16F873-04I/SO
• Description: IC MCU FLASH 4KX14 EE 28SOIC
• Manufacturer: Microchip Technology
• Series: PIC® 16Fr

Specifications of PIC16F873-04I/SO

• Core Size: 8-Bit
• Program Memory Size: 7KB (4K x 14)
• Core Processor: PIC
• Speed: 4MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 22
• Program Memory Type: FLASH
• Eeprom Size: 128 x 8
• Ram Size: 192 x 8
• Voltage - Supply (vcc/vdd): 4 V ~ 5.5 V
• Data Converters: A/D 5x10b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 28-SOIC (7.5mm Width)
• Controller Family/series: PIC16F
• No. Of I/o's: 22
• Eeprom Memory Size: 128Byte
• Ram Memory Size: 192Byte
• Cpu Speed: 4MHz
• No. Of Timers: 3
• Package: 28SOIC W
• Device Core: PIC
• Family Name: PIC16
• Maximum Speed: 4 MHz
• Operating Supply Voltage: 5 V
• Data Bus Width: 8 Bit
• Number Of Programmable I/os: 22
• Interface Type: I2C/SPI/USART
• On-chip Adc: 5-chx10-bit
• Number Of Timers: 3
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: XLT28SO-1 - SOCKET TRANSITION 28SOIC 300MIL309-1073 - ADAPTER 28-SOIC TO 28-SOIC309-1024 - ADAPTER 28-SOIC TO 28-DIP309-1023 - ADAPTER 28-SOIC TO 28-DIP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

PICmicro MID-RANGE MCU FAMILY
14.4
DS31014A-page 14-6
Compare Mode
In Compare mode, the 16-bit CCPRx register value is constantly compared against the TMR1
register pair value. When a match occurs, the CCPx pin is:
• Driven High
• Driven Low
• Remains Unchanged
The action on the pin is based on the value of control bits CCPxM3:CCPxM0 (CCPxCON<3:0>).
At the same time, a compare interrupt is also generated.
Figure 14-2: Compare Mode Operation Block Diagram
Note:
Timer1 must be running in Timer mode or Synchronized Counter mode if the CCP
module is using the compare feature. In Asynchronous Counter mode, the compare
operation may not work.
CCPx Pin
Output Enable
TRIS
Q
R
S
CCPxCON<3:0>
Mode Select
Special Event
Output
Logic
Set flag bit CCPxIF
match
CCPRxH CCPRxL
TMR1H
Comparator
1997 Microchip Technology Inc.
TMR1L